EP3566238A1 - Dispositif de protection contre les surtensions et procédé de fabrication d'un dispositif de protection contre les surtensions - Google Patents

Dispositif de protection contre les surtensions et procédé de fabrication d'un dispositif de protection contre les surtensions

Info

Publication number
EP3566238A1
EP3566238A1 EP18710360.1A EP18710360A EP3566238A1 EP 3566238 A1 EP3566238 A1 EP 3566238A1 EP 18710360 A EP18710360 A EP 18710360A EP 3566238 A1 EP3566238 A1 EP 3566238A1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
housing
membrane
pot
pressure relief
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18710360.1A
Other languages
German (de)
English (en)
Other versions
EP3566238B1 (fr
Inventor
Erhard Pippert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3566238A1 publication Critical patent/EP3566238A1/fr
Application granted granted Critical
Publication of EP3566238B1 publication Critical patent/EP3566238B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/15—Details of spark gaps for protection against excessive pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/04—Housings

Definitions

  • the invention relates to an overvoltage arrester according to the preamble of claim 1 and to a manufacturing method according to the preamble of claim 11.
  • Surge arresters are used in the medium voltage and high voltage range to safely dissipate so-called overvoltages, ie voltages well above the nominal voltages provided in the operation. This avoids damage to equipment such as transformers.
  • a surge arrester for high voltage can be arranged on an overhead line and in case of lightning strike or short circuit inadmissibly discharge high currents towards the earth.
  • Surge arresters generally contain so-called varistors, ie electrical resistors whose electrical resistance is very high up to a design-related threshold voltage and greatly reduced above the threshold voltage, so that the surge arrester becomes a good electrical conductor.
  • Encapsulated surge arrester be for high voltage application often called. Used which have a ge ⁇ erdetes and fluid-tight housing with an electrically insulating inert gas such as
  • Sulfur hexafluoride (SF6) is filled. It can come in a strong electrical stress of the surge arrester to damage with strong gas expansion inside the housing.
  • pressure relief devices are provided. From publication WO 2013/167445 AI a filled with a protective gas Gönapssabieiter for high voltage is known, which is equipped for the case of failure with a pressure relief arrangement. In this case, an overpressure inside the housing of the Abieiters be broken by a rupture of a membrane made of metal.
  • the exiting gas stream impinges on a cavity between the membrane and a deflection cover, which laterally discharges the gas with respect to a longitudinal axis through the Abieiter.
  • a recovery chute Arranged on the deflection cover is a recovery chute, which ensures a controlled outflow of the gas flow into the environment.
  • the deflecting lid is curved toward the membrane in such a way that it easily yields in the event of a fault and can absorb part of the kinetic energy of the outflowing gas by plastic deformation away from the membrane. This results in a certain buffering effect.
  • the membrane is fixed by a clamping ring on a flange of the surge arrester and screwed with number ⁇ rich screws.
  • the object is to provide a surge arrester which is comparatively simple and inexpensive forth ⁇ adjustable.
  • the invention achieves this object by a surge arrester according to claim 1.
  • the clip-twist lock several locking projections which are defined by rotating in komplemen ⁇ -refractory recesses of the housing.
  • at least three latching projections each with the same angular distance from one another, can be arranged on an outer contour of the pressure relief arrangement.
  • particularly preferably three latching projections can be provided which are each designed as a strip-like projection and extend approximately 60 ° along the outer contour. In each case about 60 ° of the outer contour remain through the
  • the proper regulatory Druckentlastungsan ⁇ a substantially cup-shaped design engaging means having a bottom and a side wall. This Fully ⁇ staltung is advantageous because the pot particularly good for capturing and redirecting the exiting gas is suitable.
  • substantially an entire height of the side wall of the latching means with latching projections ⁇ is provided. This is an advantage because a particularly strong contact force is exerted by the interlocking of the numerous latching projections with the complementary areas of the housing.
  • the latching means on several ⁇ re support ribs which are arranged along the side facing the inside of the pot inside of the side wall.
  • the Stützrip ⁇ pen run from the side wall of the pot to the ground.
  • the support ribs on the cup-shaped latching ensure the mechanical stability of the Druckentlas ⁇ processing device even with comparatively low wall thicknesses for the side wall and the floor.
  • the support ribs ensure a stable support for a second contact pressure, so that a sufficiently large (eg annular) surface for pressing a membrane is ready ge ⁇ provides.
  • the side wall has a first outflow opening, which is formed when mounted
  • Einraststoff on the one hand provides a deflection function for outflowing gas and on the other hand, a closure system.
  • At least three catch ⁇ projections are provided, which are arranged along the side remote from the pot interior outside of the side wall.
  • the bottom is bulged toward the interior of the pot.
  • both pressing means may be formed as metal discs with the same diameter as the membrane, wherein the metal discs each have at least one opening. Through the openings, the pressure can be applied to the membrane or flow when tearing the membrane, the gas.
  • the openings are preferred as per ⁇ wells provided a large circular opening, so that the respective pressing means is substantially formed as a ring from a metal sheet.
  • the pressure relief device has a mounting projection for transmitting a rotational movement on the side of the bottom facing away from the interior of the pot.
  • the mounting projection serves to engage with a machine on the mounting projection in an automated assembly and to rotate the latching means or the pot. It can also be several mounting projections or "locking lugs" are provided at the bottom of the pot.
  • the object of the invention is to specify a manufacturing method for a surge arrester which can be carried out in a comparatively simple and cost-effective manner.
  • FIG 3 shows a further cross section through the surge arrester with the pressure relief arrangement according to the invention.
  • a latching means 1 shows a latching means 1, which is formed substantially pot-shaped.
  • a cylinder jacket-shaped Be ⁇ tenwand 7 has an outer side 55 and an inner side 56th
  • a bottom 60 has a bottom inside 2, the
  • test port befin ⁇ det 3
  • the test port 3 is used for test purposes in order to check a fluid seal in the mounted state on the surge arrester.
  • the latching means 1 has on the outer side 55 of the side wall 7 latching projections 8, 9, 10, 11, 12, 13.
  • the latching Leaps 8-13 form a double Baj onett-closure, which can be fixed by turning in complementary recesses of a (not shown) housing.
  • the latching projections 8-13 are arranged in pairs such that on the outer side 55 of the side wall 7 in each case about 60 ° of the outer wall, ie about 1/6 of the circumference of the side wall, remains free of the Einrastvorsprün ⁇ conditions. Through these free areas, the Einrastmit ⁇ tel 1 can be inserted into a housing and fixed by turning.
  • the paired latching means each have a latching means 9, 10, 13, which is arranged directly on the upper edge 57 of the side wall 7.
  • the engagement means 9, 10, 13 in addition to the upper edge 57 of the side wall 7 and provide as well as the cooling fins 18 has a larger bearing surface for a (not shown) from arrival pressing means. Also thereby the mechanical Stabili ⁇ ty is improved.
  • two openings 52,53 are provided, which together form a first outflow opening 52,53 of the latching means 1.
  • the upper edge 57 of the side wall 7 in the region of the outflow openings 52, 53 formed as a common edge 16.
  • the widened edge 16 facing the pot ⁇ inner attention to two bulges 19, 20th The bulges 19, 20 serve similar to the support ribs 18 of the improvement of the mechanical stability when placing a (not illustrated ⁇ set) contact pressure.
  • the widened upper edge 16 is supported via a connecting piece 15 on a widened bottom piece 14.
  • the widened bottom piece 14 protrudes in the same way as the latching projections 8-13 slightly beyond the outer wall 55 of the Sei ⁇ tenwand 7 also to be locked in a housing (not shown).
  • FIG. 2 shows in cross-section as the latching means 1 to ⁇ together with a first pressing means 25, a membrane 22, 23 and a second press-on means 21 is a pressure relief arrangement 1, 21, 22, 23, 25 forms, which is determined by rotation in a housing It can be seen that the interior of the pot to the left towards a second
  • Outflow 51 is open in the housing, since the first discharge port 52, 53 and the second discharge port 51 are brought to coincide.
  • two mounting projections 35, 36 are provided on the underside ⁇ side of the bottom 60.
  • an annular formed second pressing means 21 is placed, which is mechanically supported by said elements 18, 9, 10, 16.
  • On the second pressing means 21 is formed as a thin metal sheet membrane 22 having a cylinder jacket-shaped outer edge 23. The outer edge 23 is attached to the interior of the housing 24 and thus on the second pressing means 21 facing away from the membrane 22.
  • the Memb ⁇ ran is not supported 22 over a large part of the cavity, which the latch ⁇ means 21 provides through its cup-shaped configuration.
  • Membrane 22 comprising a sealing ring 62 is arranged.
  • the sealing ring 62, the membrane 22 and the cylinder jacket-shaped membrane portion 23 form an annular circumferential recess into which engages a likewise annular circumferential bulge 61 of the housing 24.
  • This construction is suitable, when fixing the latching means 1 by means of the latching projections 8, 9, 10, 11 via the second pressing means 21, the membrane 22, 23 and the sealing ring 62 to press against the housing and set fluid-tight.
  • a first pressing means 25 is provided on the membrane 22 and bordered by the cylindrical peripheral membrane portion 23, a first pressing means 25 is provided.
  • FIG. 3 shows another cross-sectional view of the Geotrou ⁇ ses with the pressure relief assembly. It can be seen that the bottom 60 has a thickness 34.
  • the first bottom portion 31 is disposed as a concentric ring around the test port 3 and substantially parallel to Membrane surface 22 is arranged. In a tapered Bodenbe ⁇ rich 32, the curvature is produced.
  • a third floor area 33 in turn, the floor is supported by the support ribs 18 and connected to the side wall.
  • the first floor area 31 has a width 4.
  • the second floor area 32 has a width 5.
  • the third floor area 33 has a width 6.
  • the arrow 50 indicates the way in which a fluid flows out of the interior of the pot in a direction towards the outside Ausbiaschute increases when the membrane 22, 23 breaks.
  • the first pressing means 25 is substantially cross-shaped and has four wing sections, of which three wing sections 41, 42, 43 can be seen. Between the wing sections 41, 42, 43 there are open areas 43, 44, in which the interior of the housing or the fluid-tight gas space strikes the membrane 22 directly. This is advantageous because it can in pressure build-up in the perception ⁇ ren of the surge arrester or the housing 24, the gas pressure on the areas 43, 44, the membrane 22 bulge to the inside of the pot-shaped catch means 1 and allow tear closing ⁇ Lich. If the membrane breaks, the gas can flow into the cavity of the pot, whereby a first overpressure is slightly reduced. The curvature of the bottom 60 causes improved mechanical stability. Finally, the gas flow is deflected laterally and in the direction of

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

La présente invention concerne un dispositif de protection contre les surtensions comprenant un carter (24) étanche au fluide et un ensemble de détente de pression (1,21,22,23,25) conçu pour procurer, en cas de dépassement d'une valeur seuil d'une pression de gaz régnant à l'intérieur du carter (24), une liaison d'acheminement d'un fluide vers le côté extérieur du carter, caractérisé en ce que l'ensemble de détente de pression (1,21,22,23,25) est fixé au carter (24) par au moins une fermeture rotative (18,9,10,11,12,13) encliquetable. L'invention concerne également un procédé de fabrication correspondant pour un dispositif de protection contre les surtensions.
EP18710360.1A 2017-03-07 2018-02-27 Dispositif de protection contre les surtensions et procédé de fabrication d'un dispositif de protection contre les surtensions Active EP3566238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017203657.5A DE102017203657A1 (de) 2017-03-07 2017-03-07 Überspannungsableiter und Herstellungsverfahren für einen Überspannungsableiter
PCT/EP2018/054737 WO2018162274A1 (fr) 2017-03-07 2018-02-27 Dispositif de protection contre les surtensions et procédé de fabrication d'un dispositif de protection contre les surtensions

Publications (2)

Publication Number Publication Date
EP3566238A1 true EP3566238A1 (fr) 2019-11-13
EP3566238B1 EP3566238B1 (fr) 2021-01-13

Family

ID=61622527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18710360.1A Active EP3566238B1 (fr) 2017-03-07 2018-02-27 Dispositif de protection contre les surtensions et procédé de fabrication d'un dispositif de protection contre les surtensions

Country Status (5)

Country Link
US (1) US20210287830A1 (fr)
EP (1) EP3566238B1 (fr)
CN (1) CN110383400A (fr)
DE (1) DE102017203657A1 (fr)
WO (1) WO2018162274A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11894166B2 (en) 2022-01-05 2024-02-06 Richards Mfg. Co., A New Jersey Limited Partnership Manufacturing process for surge arrestor module using compaction bladder system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050719B (en) * 1979-05-25 1983-06-08 Bowthorpe E M P Ltd Surge arrester
CH664642A5 (de) * 1984-04-13 1988-03-15 Bbc Brown Boveri & Cie Ueberspannungsableiter.
ITPD20030228A1 (it) 2003-10-01 2005-04-02 Comem Spa Struttura di scaricatore di sovratensione
JP4495546B2 (ja) * 2004-08-18 2010-07-07 株式会社サンコーシヤ 保安装置
CN202275789U (zh) * 2011-10-28 2012-06-13 深圳市天顺电气有限公司 电涌保护器的旋转脱扣装置及电涌保护器
DE102012008484A1 (de) * 2012-04-24 2013-10-24 Pfisterer Kontaktsysteme Gmbh Vorrichtung zum Ableiten einer elektrischen Überspannung
DE102012207914A1 (de) 2012-05-11 2013-11-14 Siemens Aktiengesellschaft Überspannungsableiter
EP2669903B1 (fr) * 2012-05-30 2018-09-12 Siemens Aktiengesellschaft Paratonnerre capsulé avec passage central
CN203659558U (zh) 2014-01-22 2014-06-18 泰科电子(上海)有限公司 避雷器
EP2991084B1 (fr) * 2014-08-26 2022-05-11 Siemens Energy Global GmbH & Co. KG Parafoudre

Also Published As

Publication number Publication date
US20210287830A1 (en) 2021-09-16
CN110383400A (zh) 2019-10-25
WO2018162274A1 (fr) 2018-09-13
DE102017203657A1 (de) 2018-09-13
EP3566238B1 (fr) 2021-01-13

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